Years ago I got given a TIX clock. I like its stylish design and interesting way of representing time. Like a regular digital clock it tells time in hours and minutes, each broken up into tens and units. However instead of using characters it uses the corresponding number of lit up dots. To read the time you simply count the dots. It's slower to read, but a good conversation starter.
Late last week I heard about a 3D printer show in London and quickly bought a ticket. Today I went and it was an amazing experience.